我在资源目录下有这个 log4j2.json 文件
{
"configuration": {
"status": "TRACE",
"name": "App",
"monitorInterval": "300",
"appenders": {
"appender": [
{
"type": "Console",
"name": "STDOUT",
"PatternLayout": {
"pattern": "%m%n"
}
},
{
"type": "RollingFile",
"name": "RollingFile",
"PatternLayout": {
"pattern": "%m%n"
},
"filename": "console.log",
"filePattern": "$${date:yyyy-MM}/console-%d{MM-dd-yyyy}-%i.log",
"TimeBasedTriggeringPolicy": {
"interval": 24,
"modulate": true
}
},
{
"type": "RollingFile",
"name": "text-roll",
"PatternLayout": {
"pattern": "%d %p %c{1.} [%t] %m %ex%n"
},
"filename": "info.log",
"filePattern": "$${date:yyyy-MM}/info-%d{MM-dd-yyyy}-%i.log",
"TimeBasedTriggeringPolicy": {
"interval": 24,
"modulate": true
}
},
{
"type": "RollingFile",
"name": "json-roll",
"JsonLayout": {
"complete": true,
"compact": true,
"eventEol": true
},
"filename": "json.log",
"filePattern": "$${date:yyyy-MM}/json-%d{MM-dd-yyyy}-%i.log",
"TimeBasedTriggeringPolicy": {
"interval": 24,
"modulate": true
}
}
]
},
"loggers": {
"logger": [
{
"name":"Console Root",
"level": "debug",
"AppenderRef": {
"ref": "STDOUT"
}
},
{
"name":"Console Output",
"level": "trace",
"AppenderRef": {
"ref": "RollingFile"
}
},
{
"name":"Info",
"level": "info",
"AppenderRef": {
"ref": "text-roll"
}
},
{
"name":"Json",
"level": "error",
"AppenderRef": {
"ref": "json-roll"
}
}
],
"root": {
"AppenderRef": {
"ref": "STDOUT"
}
}
}
}
}
虽然它确实创建了这些文件，但从不写入任何内容。 在console.log中，info.log为空。但是 json.log 有这样的内容:
[
]
]
]
]
]
]
这是启动服务器进行 log4j 初始化后的控制台: Gist of the console output
最佳答案
我不确定，但根据唯一未调试的日志行，
Log4j appears to be running in a Servlet environment, but there's no log4j-web module available. If you want better web container support, please add the log4j-web JAR to your web archive or server lib directory.
那个 jar 存在吗？
关于java - Log4j2 json 配置不写入文件，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/33887073/